explain

3. D. The bar graph gives the population of the city in thousands for six years. First estimate the population of the city in the years 1970 and 1980. The population in 1970 is approximately 1,150,000 people. The population in 1980 is close to 1,100,000, so estimate it as about 1,090,000 people. Subtract these two populations to nd the decrease in population. 1,1 50,000 - 1,090,000 = 60,000 4. A. The pie chart gives the percentage of the family's budget that is spent in six different categories. Notice that food takes up 13% of the budget. Therefore, multiply 0.13 (the decimal equivalent of 13%) by $60,000. 0.13 x$60,000 = $7,800 Thus, the family spent about $7,800 on food